The Hub

Rask Guitars — Utah (relocation required) Rask Guitars is a Utah-based custom shop dedicated to building exceptional instruments — primarily high-end acoustics, alongside electric guitars and prototypes. We operate with a small, focused team where craftsmanship isn't just a standard, it's the entire point. We're growing, and we're looking for a skilled, experienced luthier who's ready to plug into a real production environment, contribute…

A visual dependency map for Autodesk Fusion. It turns complex Fusion designs into an interactive map of model logic, helping users understand how parameters, sketches, construction references, features, bodies, and other design elements relate to each other. Instead of digging through dense timelines, browser trees, and feature chains, Node Atlas gives users a readable graph of how a design is connected. It is built for designers, builder…

Hi everyone, I'm Martino from Hub of Acoustics, a collaborative project created by luthiers for luthiers. Our goal is to explore and teach acoustic principles that are directly relevant to instrument making. In 2026, we’ll be running four courses in different parts of the world, all focused on giving luthiers practical tools to better understand and control the acoustics of their instruments. We’re excited to introduce our very…

I did a pretty big update to my web tools last week. These are updated from the older versions I had up on celestialinstruments.com. There’s an updated FFT tool now, plus mode detection for guitars and plates, wolf note detection, played-note energy transfer, monopole mobility, plate thickness calculation, and 1/2/3/4 DOF modeling that can be prefilled from FFT data. The part I’m most excited about is being able to fit a measured guitar re…

I recently picked up a used custom guitar that the seller said he bought in Vietnam Nam many years ago. I bought it as a wall hanger due to the wonderful Mother of Pearl work, especially on the back. It was very apparent that the top on this instrument was sunken at least 3/8 of an inch, as the weird bridge setup was heightened to the max and there was barely any action height. Once I took it apart and removed the foam inside, I was…

I replaced a broken trussrod in a mandolin today, and after gluing the fingerboard back on I was surprised to feel a small ledge on either side of the board suggesting that in the 3-hour period since removing it, the board had shrunk over its width. It was definitely flush before I removed it, and I used the same locating pins as the original builder, so it can't have shifted. Is it possible that the board could have shrunk that quick…